ITU-T G.Sup41 (06 2007) (英) Design guidelines for

InternationalTelecommunicationUnionITU-TSeriesGTELECOMMUNICATIONSTANDARDIZATIONSECTOROFITUSupplement41(06/2007)SERIESG:TRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSDesignguidelinesforopticalfibresubmarinecablesystemsITU-TG-seriesRecommendations–Supplement41ITU-TG-SERIESRECOMMENDATIONSTRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSINTERNATIONALTELEPHONECONNECTIONSANDCIRCUITSG.100–G.199GENERALCHARACTERISTICSCOMMONTOALLANALOGUECARRIER-TRANSMISSIONSYSTEMSG.200–G.299INDIVIDUALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEMSONMETALLICLINESG.300–G.399GENERALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEMSONRADIO-RELAYORSATELLITELINKSANDINTERCONNECTIONWITHMETALLICLINESG.400–G.449COORDINATIONOFRADIOTELEPHONYANDLINETELEPHONYG.450–G.499TRANSMISSIONMEDIAANDOPTICALSYSTEMSCHARACTERISTICSG.600–G.699DIGITALTERMINALEQUIPMENTSG.700–G.799DIGITALNETWORKSG.800–G.899DIGITALSECTIONSANDDIGITALLINESYSTEMG.900–G.999QUALITYOFSERVICEANDPERFORMANCE–GENERICANDUSER-RELATEDASPECTSG.1000–G.1999TRANSMISSIONMEDIACHARACTERISTICSG.6000–G.6999DATAOVERTRANSPORT–GENERICASPECTSG.7000–G.7999PACKETOVERTRANSPORTASPECTSG.8000–G.8999ACCESSNETWORKSG.9000–G.9999Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.Gseries–Supplement41(06/2007)iSupplement41toITU-TG-seriesRecommendationsDesignguidelinesforopticalfibresubmarinecablesystemsSummaryThissupplementdescribesdesignconsiderationsforrepeatered,repeaterlessandopticallyamplifiedsystemssupportingSDHandOTNsignalsinopticalsubmarinecablesystems.SourceSupplement41toITU-TG-seriesRecommendationswasagreedon15June2007byITU-TStudyGroup15(2005-2008).iiGseries–Supplement41(06/2007)FOREWORDTheInternationalTelecommunicationUnion(ITU)istheUnitedNationsspecializedagencyinthefieldoftelecommunications.TheITUTelecommunicationStandardizationSector(ITU-T)isapermanentorganofITU.ITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecommendationsonthemwithaviewtostandardizingtelecommunicationsonaworldwidebasis.TheWorldTelecommunicationStandardizationAssembly(WTSA),whichmeetseveryfouryears,establishesthetopicsforstudybytheITU-Tstudygroupswhich,inturn,produceRecommendationsonthesetopics.TheapprovalofITU-TRecommendationsiscoveredbytheprocedurelaiddowninWTSAResolution1.InsomeareasofinformationtechnologywhichfallwithinITU-T'spurview,thenecessarystandardsarepreparedonacollaborativebasiswithISOandIEC.NOTEInthispublication,theexpressionAdministrationisusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.Compliancewiththispublicationisvoluntary.However,thepublicationmaycontaincertainmandatoryprovisions(toensuree.g.,interoperabilityorapplicability)andcompliancewiththepublicationisachievedwhenallofthesemandatoryprovisionsaremet.Thewordsshallorsomeotherobligatorylanguagesuchasmustandthenegativeequivalentsareusedtoexpressrequirements.Theuseofsuchwordsdoesnotsuggestthatcompliancewiththepublicationisrequiredofanyparty.INTELLECTUALPROPERTYRIGHTSITUdrawsattentiontothepossibilitythatthepracticeorimplementationofthispublicationmayinvolvetheuseofaclaimedIntellectualPropertyRight.ITUtakesnopositionconcerningtheevidence,validityorapplicabilityofclaimedIntellectualPropertyRights,whetherassertedbyITUmembersorothersoutsideofthepublicationdevelopmentprocess.Asofthedateofapprovalofthispublication,ITUhadnotreceivednoticeofintellectualproperty,protectedbypatents,whichmayberequiredtoimplementthispublication.However,implementersarecautionedthatthismaynotrepresentthelatestinformationandarethereforestronglyurgedtoconsulttheTSBpatentdatabaseat©ITU2008Allrightsreserved.Nopartofthispublicationmaybereproduced,byanymeanswhatsoever,withoutthepriorwrittenpermissionofITU.Gseries–Supplement41(06/2007)iiiCONTENTSPage1Scope............................................................................................................................12References.....................................................................................................................13Termsanddefinitions...................................................................................................34Abbreviationsandacronyms........................................................................................35Parametersofsystemelements.....................................................................................55.1Transmitterparameters...................................................................................55.2Submarinecableparameters...........................................................................65.3Submarinerepeaterparameters......................................................................105.4Cablejointparameters....................................................................................125.5Receiversparameters......................................................................................136Opticalnetworktopology.........................................................................................